Molding-machine.



o. A. HAGADONE.

MOLDING MACHINE.

APPLIUATION FILED JUNE 1s, 1905.

PATENTED NOV. 2l, 1905.

2 SHEETS-SHEET 1.

No. 805,134. PATENTED NOV. 2l, 1905 C. A. HAGADONE.

MLDING MACHINE.

APPLICATION FILED JUNE 1s, 1905.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

CLINTON A. HAGADONE, OF CHICAGO, ILLINOIS, ASSIGNOR TO INTERNA- TIONAL HARVESTER COMPANY, A CORPORATION OF NEW JERSEY.

IVIOLDING-NIACHIN E.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application tiled June 16, 1905. Serial Noi 265,582.

T all whom t may concern:

Be it known that I, CLINTON A. HAGADONE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Molding-Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to molding-machines, and particularly to that type called Hturnover7 machines, wherein the pattern-carrier is supported upon an arm that is adapted to swing through a vertical arc of one hundred and eighty-degrees, more or less; and it consists in a spring counterbalancing mechanism connected with said arm and designed to accommodate itself to the various positions the arm may assume, the compensating features of which mechanism eifectually maintain a proper counterpoise between the weight and said mechanism 'as the arm is moved from side to side, the object of the invention being to improve the construction of the counterbalancing mechanism in a manner to provide a better balancing or counterpoise for the moving parts. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of a moldingmachine frame and swinging arm, the latter being shown in a horizontal position with the counterbalancing mechanism connected therewith. Fig. 2 represents the lsame parts with the swinging arm in a vertical position. Fig. 3 is a plan view of the counterbalancing mechanism. Fig. 4 is a vertical section on line A B of Fig. 3, and Figs. 5, 6, 7, 8, 9, 10, and 11 are detached details of parts of the counterbalancing mechanism. Similar characters refer to similar parts throughout the several views.

1 represents the bed-frame of the machine, supported by the legs 2.

3 and 4 are vertically-arranged arms secured to the bed-frame, and 5 is a swinging arm pivotally mounted at the upper ends of the vertical arms and to which the patterncarrying frame and associated parts are connected in any desired manner. The rear end of the arm 5 projects beyond its pivotal connection, and connected thereto is a chain or other flexible member 6, that passes downward below a sheave 7, journaled on one of rnected by means of a turnbuckle 11.

the frame members and outward and over a sheave 8, journaled on a cross-rod Q at one end of the bed-frame and inward to one end of a link 10, to which it is adjustably con- The opposite end of the link is pivotally connected with the lower end of a two-armed compensating lever 12, having its arms disposed at substantially right angles with each other, that is pivotally mounted at its upper end upon a cross-rod 13, forming part of the frame of the machine and having one end pivotally connected -with the link 12. Intermediate its ends is a link 14, having a crosshead at its opposite end and having the reduced portions 16 and 17 at opposite ends thereof. Pivotally mounted on said reduced ends are hooks 18 and 19, and 2O and 21 are flexible members having one end engaging the hooks and extending outward and. over sheaves 22 and 23, ournaled at opposite ends of a frame member 24 at the opposite end of the bed-frame and having their opposite ends connected with adjustable eyebolts 25 and 26, that are screw-threaded to engage with screw-threaded nuts 27 and 28. The nuts are grooved or threaded in a manner to engage with the coils of one end of counterbalancingsprings 29, that have their opposite ends secured to the cross-rod 9. By reason of the threaded connection of the nuts with the coils of the springs they may be adjusted thereon in a manner to increase or decrease the effective power thereof, according to the number of coils brought into active operation, and by means of the screw-threaded eyebolts and the turnbuckle the operative length of the iiexible member may be adjusted. The adjustments, as described, are designed to compensate for the difference in weight of the various patterns and associated parts that may be carried by the swinging arm Within certain limits. The arm 5 may be moved in either direction from a vertical to a horizontal position and the counterbalancing mechanism remain equally effective, the construction of the counterbalancing mechanism being such as to exert a variable counterpoising force as opposed to the weight of the arm 5 and the parts carried thereby as it is moved from side to side of the machine. With the arm 5 in the osition as shown in Fig. 1 the iiexible mem er 6 has caused the upper arm of the compensating lever 12 to TOO IOS

swing to the right-hand side of a vertical line and carry the outer end of the other arm below a horizontal line, and the link 14 being connected to the lever 12 intermediate its ends, as shown in Fig. 1, the effective length and force of lever 12 upon the link to draw it toward the right hand of the machine increases as the lower arm of the lever moves downward, and the opposite end of link 14 being connected, by means of the flexible members 2O and 21, with the counterbalancing-springs 29 they are thereby extended in length and are operative to carry the load connected therewith. When the arm 5 is being moved from the position shown in Fig. l to that shown in Fig. 2, the springs 29 exert a variaable power as they contract, which is compensated for by the decreasing effective length of the arm of lever 12, to which the flexible member 6 is connected, as it swings toward the left-hand of the machine and upward, as shown in Fig. 2.

In operating machines of' this class the pattern is usually made in two parts that are secured to opposite sides of the arm 5. A part of the flask is secured to the arm in a manner to inclose one-half of the pattern, and after it has been filled with sand in the usual way the arm is swung to the opposite side of the bedframe and the flask will rest thereon. The means for securing the flask to the arm are then released and the pattern is withdrawn and the arm swung back again, leaving the half-flask supported upon the bed-frame, and these movements may be repeated and the flask may be secured to either side of the arm desired, the object of the spring-counterbalancing mechanism being to counterpoise the weight of the arm and flask at any point in their movement for the purpose of preventing sudden jars that would tend to destroy the mold and to make the operation of molding and handling the flask less laborious.

What I claim as being my invention, and desire to secure by Letters Patent, is-

1. In a molding-machine, the combination of a bed -frame, a patterncarrying arm mounted upon a horizontal pivot upon said frame and adapted to swing through an arc approximating one hundred and eighty degrees, a counterbalancing mechanism comprising a fiexible member connected with said arm upon one side of said pivot and extending downward and engaging with a sheave below said pivotal connection of the arm and extending outward and engaging with a sheave mounted at one end of said frame and then inward and connected to one end of a lever pivotally mounted at its opposite end upon the frame, a flexible member connected with said lever intermediate its ends and extending outward and engaging with a sheave at the opposite end of said frame and then inward and connected to one end of a counterbalancing-spring, said spring having its opposite end secured to the frame at the first-mentioned end thereof.

2. In a molding-machine, the combination of a bed-frame, a pattern -carrying arm mounted upon said frame in a manner permitting it to swing in a vertical plane to a horizontal position in either direction from the vertical, a counterbalancing mechanism connected therewith comprising a two-armed compensating lever, said arms disposed at substantially right angles with each other, one arm at its outer end pivotally connected with the frame and -extending downward therefrom at substantially right angles with the horizontal plane thereof when said pattern-carrying arm is in a vertical position, the other arm having openings at opposite ends thereof, flexible members connected with said openings and extending outward in opposite directions therefrom, said members engaging with sheaves mounted on the frame and extending inward therefrom and having one member connected with the pattern-carrying arm and the other member connected with a counterbalancing-spring in a manner to operate as a counterpoise for the weight of said pattern-carrying arm.

3. In a molding-machine, the combination of a bed frame, a pattern carrying arm mounted upon a horizontal pivot upon said frame and adapted to swing from a vertical to a horizontal position in either direction, a counterbalancing mechanism comprising a flexible member connected with said arm upon one side of said pivot and extending vdownward and engaging with a sheave below said pivotal connection of the arm, and extending outward and engaging with a sheave mounted at one end of said frame, and then inward and connected to one end of a lever having its opposite end pivotally connected with the frame, a link pivotally connected at one end with said lever intermediate its ends, said link having a crosshead at its opposite end, flexible members connected lwith opposite ends of said crosshead and extending outward toward the opposite end of said frame and engaging'with sheaves mounted thereon, and then extending inward and secured to one end of coiled counterbalancing-springs having their opposite ends secured to the frame at the firstmentioned end thereof.

4; In a molding-machine, the combination of a bed frame, a pattern carrying arm mounted upon a horizontal pivot upon said frame and adapted to swing from a vertical to a horizontal position in either direction, a counterbalancing mechanism comprising a flexible member connected With said arm upon one side of said pivot, and extending downward and engaging with a sheave below said pivotal connection of the arm, and extending outward and engaging with a sheave mounted at one end of said frame,

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and then inward and connected to one end of an elbow-lever having its opposite end pivotally connected with the frame, the connecting means comprising a link having upturned ends one of which is connected to said elbowlever and the opposite end to one end of a turnbuckle having its opposite end connected with said flexible member, a link )ivotally connected at one end with said e bowlever intermediate its ends, said link having a cross head at its opposite end, flexible members connected with opposite ends of said cross-head and extending outward toward the opposite end of said frame and en- 

